On Optimal Assignment of Cold Standby Components for Multi-Channel Safety Interlocks

Yeremia Yehuda Lepar, Yu Chih Wang, Chuei Tin Chang

Research output: Chapter in Book/Report/Conference proceedingChapter


Since hardware failures are inevitable but random events, the reliabilities of safety interlocks can be closely tied to their structures and maintenance programs. Our primary objectives in this work are to devise corrective and preventive maintenance policies under the support of cold standbys and to derive the general formulations for computing the availabilities of alarm and shutdown subsystems based on their Markov diagrams. An interlock superstructure is also developed to facilitate the search for the best interlock designs and maintenance plans with the genetic algorithm (GA). One example is provided to demonstrate the feasibility and effectiveness of the proposed optimization approach.

Original languageEnglish
Title of host publication26 European Symposium on Computer Aided Process Engineering, 2016
EditorsZdravko Kravanja, Milos Bogataj
PublisherElsevier B.V.
Number of pages6
ISBN (Print)9780444634283
Publication statusPublished - 2016 Jan 1

Publication series

NameComputer Aided Chemical Engineering
ISSN (Print)1570-7946

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Computer Science Applications

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